PRACTICAL CHEMISTRY
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NEET DIGITAL LIBRARY
PRACTICAL CHEMISTRY

37460 The equivalent weight of a divalent metal is \(31.82\). The weight of a single atom is

1 \(63.64\)
2 \(\frac{{63.64}}{{6.02 \times {{10}^{23}}}}\)
3 \(32.77 \times 6.02 \times {10^{23}}\)
4 \(63.64 \times 6.02 \times {10^{23}}\)
PRACTICAL CHEMISTRY

37461 For the preparation of sodium thiosulphate by “Springs reaction”, the reactants used are

1 \(Na_2S\) + \( Na_2SO_3\) + \(Cl_2\)
2 \(Na_2S\) + \(SO_2\)
3 \(Na_2SO_3\) + \(S\)
4 \(Na_2S\) + \(Na_2SO_3\) + \({I_2}\)
PRACTICAL CHEMISTRY

37462 Phenolphthalein is most suitable indicator for the titration of

1 \(CH_3COOH\) and \(NH_4OH\)
2 \(CH_3COOH\) and \(NaOH\)
3 \(HCl\) and \(NH_4OH\)
4 \(H_2CO_3\) and \(NH_4OH\)
PRACTICAL CHEMISTRY

37463 The simplest formula of a compound containing \(50\%\) of element \(X\) (at. wt. \(10\)) and \(50\%\) of element \(Y\) (at. wt =\(20\)) is

1 \(X_2Y_3\)
2 \(XY_2\)
3 \(X_2Y\)
4 \(XY\)
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PRACTICAL CHEMISTRY

37460 The equivalent weight of a divalent metal is \(31.82\). The weight of a single atom is

1 \(63.64\)
2 \(\frac{{63.64}}{{6.02 \times {{10}^{23}}}}\)
3 \(32.77 \times 6.02 \times {10^{23}}\)
4 \(63.64 \times 6.02 \times {10^{23}}\)
PRACTICAL CHEMISTRY

37461 For the preparation of sodium thiosulphate by “Springs reaction”, the reactants used are

1 \(Na_2S\) + \( Na_2SO_3\) + \(Cl_2\)
2 \(Na_2S\) + \(SO_2\)
3 \(Na_2SO_3\) + \(S\)
4 \(Na_2S\) + \(Na_2SO_3\) + \({I_2}\)
PRACTICAL CHEMISTRY

37462 Phenolphthalein is most suitable indicator for the titration of

1 \(CH_3COOH\) and \(NH_4OH\)
2 \(CH_3COOH\) and \(NaOH\)
3 \(HCl\) and \(NH_4OH\)
4 \(H_2CO_3\) and \(NH_4OH\)
PRACTICAL CHEMISTRY

37463 The simplest formula of a compound containing \(50\%\) of element \(X\) (at. wt. \(10\)) and \(50\%\) of element \(Y\) (at. wt =\(20\)) is

1 \(X_2Y_3\)
2 \(XY_2\)
3 \(X_2Y\)
4 \(XY\)
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PRACTICAL CHEMISTRY

37460 The equivalent weight of a divalent metal is \(31.82\). The weight of a single atom is

1 \(63.64\)
2 \(\frac{{63.64}}{{6.02 \times {{10}^{23}}}}\)
3 \(32.77 \times 6.02 \times {10^{23}}\)
4 \(63.64 \times 6.02 \times {10^{23}}\)
PRACTICAL CHEMISTRY

37461 For the preparation of sodium thiosulphate by “Springs reaction”, the reactants used are

1 \(Na_2S\) + \( Na_2SO_3\) + \(Cl_2\)
2 \(Na_2S\) + \(SO_2\)
3 \(Na_2SO_3\) + \(S\)
4 \(Na_2S\) + \(Na_2SO_3\) + \({I_2}\)
PRACTICAL CHEMISTRY

37462 Phenolphthalein is most suitable indicator for the titration of

1 \(CH_3COOH\) and \(NH_4OH\)
2 \(CH_3COOH\) and \(NaOH\)
3 \(HCl\) and \(NH_4OH\)
4 \(H_2CO_3\) and \(NH_4OH\)
PRACTICAL CHEMISTRY

37463 The simplest formula of a compound containing \(50\%\) of element \(X\) (at. wt. \(10\)) and \(50\%\) of element \(Y\) (at. wt =\(20\)) is

1 \(X_2Y_3\)
2 \(XY_2\)
3 \(X_2Y\)
4 \(XY\)
NEET DIGITAL LIBRARY
PRACTICAL CHEMISTRY

37460 The equivalent weight of a divalent metal is \(31.82\). The weight of a single atom is

1 \(63.64\)
2 \(\frac{{63.64}}{{6.02 \times {{10}^{23}}}}\)
3 \(32.77 \times 6.02 \times {10^{23}}\)
4 \(63.64 \times 6.02 \times {10^{23}}\)
PRACTICAL CHEMISTRY

37461 For the preparation of sodium thiosulphate by “Springs reaction”, the reactants used are

1 \(Na_2S\) + \( Na_2SO_3\) + \(Cl_2\)
2 \(Na_2S\) + \(SO_2\)
3 \(Na_2SO_3\) + \(S\)
4 \(Na_2S\) + \(Na_2SO_3\) + \({I_2}\)
PRACTICAL CHEMISTRY

37462 Phenolphthalein is most suitable indicator for the titration of

1 \(CH_3COOH\) and \(NH_4OH\)
2 \(CH_3COOH\) and \(NaOH\)
3 \(HCl\) and \(NH_4OH\)
4 \(H_2CO_3\) and \(NH_4OH\)
PRACTICAL CHEMISTRY

37463 The simplest formula of a compound containing \(50\%\) of element \(X\) (at. wt. \(10\)) and \(50\%\) of element \(Y\) (at. wt =\(20\)) is

1 \(X_2Y_3\)
2 \(XY_2\)
3 \(X_2Y\)
4 \(XY\)
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